* {
    margin: 0;
    padding: 0;
}

ul,
ol {
    list-style: none;
}

a {
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
}

em,
strong,
i {
    font-style: normal;
}

img {
    vertical-align: middle;
    border: none;
    max-width: 100%;
}

.clearfix:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.clearfix {
    zoom: 1;
    clear: both;
}

.w1600 {
    width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

.w1400 {
    width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.down-wrap {
    padding: 120px 0;
}

.down-wrap .title {
    width: 340px;
    height: 86px;
    margin: 0 auto;
    background: url(../images/k1.png) no-repeat center bottom;
    overflow: hidden;
    text-align: center;
    background-size: contain;
}

.down-wrap .title h2 {
    font-size: 18px;
    color: #1b1b1b;
    margin-top: 20px;
}

.down-wrap .title p {
    color: #999;
    font-size: 16px;
}

.down-wrap .search {
    margin: 0 auto;
    margin-top: 60px;
}

.down-wrap .search .group {
    display: flex;
    justify-content: center;
}

.down-wrap .search .input input,
.down-wrap .search .select select,
.down-wrap .search .btn-search {
    background-color: #fff;
    width: 260px;
    height: 50px;
    line-height: 50px;
    font-size: 18px;
    border: 1px solid #d9d9d9;
    float: left;
    padding: 0 20px;
    border-radius: 4px;
    color: #595959;
    margin: 0 6px 0 4px;
}

.down-wrap .search .input input:focus {
    border: 1px solid #ff9600;
}

.down-wrap .search .select {
    position: relative;
}

.down-wrap .search .select select {
    appearance: none;
    -moz-appearance: none;
    -webkit-appearance: none;
    outline: none;
    width: 160px;
}

.down-wrap .search select:focus {
    border: 1px solid #ff9600;
}

.down-wrap .search select option {
    height: 20px;
    line-height: 20px;
}

.down-wrap .search .select:after {
    content: "";
    width: 14px;
    height: 8px;
    background: url('../images/coa_down_jt.png') no-repeat center center;
    /*通过定位将图标放在合适的位置*/
    position: absolute;
    right: 20px;
    top: 41%;
    /*给自定义的图标实现点击下来功能*/
    pointer-events: none;
    background-size: contain;
}

.down-wrap .search .btn-search {
    width: 150px;
    cursor: pointer;
    background-color: #ff9600;
    color: #fff;
    border-radius: 4px;
}

.down-wrap .search .btn-search:hover {
    opacity: 0.75;
}

.down-wrap .list-wrap {
    padding: 60px 0;
    margin: 0 auto;
}

.down-wrap .list-wrap ul li {
    background-color: #f5f5f5;
    border-radius: 4px;
    margin-bottom: 12px;
    padding: 16px 20px;
}

.down-wrap .list-wrap ul li a {
    display: flex;
    align-items: center;
}

.down-wrap .list-wrap ul li h3 {
    font-size: 18px;
    margin-right: 6px;
    color: #1b1b1b;
    font-weight: normal;
    display: flex;
    align-items: center;
}

.down-wrap .list-wrap ul li .file_extensions {
    width: 48px;
    height: 48px;
    background-size: contain;
    margin-right: 12px;
}

.down-wrap .list-wrap ul li .file_extensions.pdf {
    background: url(../images/file_icon/pdf.png) no-repeat;
}

.down-wrap .list-wrap ul li .file_extensions.doc {
    background: url(../images/file_icon/word.png) no-repeat;
}

.down-wrap .list-wrap ul li .file_extensions.zip,
.down-wrap .list-wrap ul li .file_extensions.rar {
    background: url(../images/file_icon/zip.png) no-repeat;
}

.down-wrap .list-wrap ul li a span {
    color: #999;
    margin: 0 12px;
}

.down-wrap .list-wrap ul li i.down {
    margin-left: auto;
    background: #ff9600;
    color: #FFF;
    border-radius: 4px;
    padding: 6px 12px;
    width: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-transition: all 0.3s ease-in;
    -moz-transition: all 0.3s ease-in;
    -o-transition: all 0.3s ease-in;
    transition: all 0.3s ease-in;
}

.down-wrap .list-wrap ul li:hover {
    cursor: pointer;
    ;
}

.down-wrap .list-wrap ul li:hover i.down {
    opacity: 0.75;
}

.bg_cover {
    background-color: rgb(0, 0, 0);
    opacity: 0.3;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    position: fixed;
    _position: absolute;
    pointer-events: auto;
    z-index: 9999;
    display: none;
}

.form_box {
    position: fixed;
    top: 25%;
    left: 50%;
    margin-left: -190px;
    background: #fff;
    width: 300px;
    height: auto;
    padding: 40px 40px 70px 40px;
    z-index: 9999;
    display: none;
}

.form_box>a {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 20px;
}

.form_box .form_wrap>h2 {
    text-align: center;
    font-size: 20px;
    line-height: 2;
}

.form_box .form_wrap>p {
    text-align: center;
    font-size: 14px;
    line-height: 2;
    color: #999;
    margin-bottom: 20px;
}

.input_row {
    margin-bottom: 15px;
}

.input_row input {
    height: 30px;
    width: 100%;
    border: 1px solid #ccc;
    text-indent: 10px;
}

.form_box input[type="submit"] {
    background: #ff9600;
    display: block;
    width: 100%;
    height: 40px;
    line-height: 40px;
    color: #fff;
    font-size: 18px;
    margin-top: 20px;
    cursor: pointer;
}

.form_box .down_btn {
    text-align: center;
    display: none;
    padding-top: 24px;
}

.form_box .down_btn a:hover {
    color: #ff9600;
}